Compact Rotation Stages, High Precision Miniaturized Rotary Stages

PI offers compact, high-precision motorized rotation stages ideal for demanding optics and photonics applications:

Piezo-based direct-drive rotation stages (e.g., U‑622, U‑624, Q‑632) deliver ultra-compact footprints (as small as 18.5 mm diameter), backlash-free motion, high speed (up to 720°/s), and encoder resolution down to single-digit microradians
Stepper motor and closed-loop servo motor stages using worm gears enhance torque, resolution (arc-second level), and offer high locking torque when powered off—ideal for reliable long-term positioning.

These continuous rotary stages support precise, repeatable rotation in very compact form factors, enhancing alignment accuracy and throughput in photonics, microscopy, and medical device assembly. The stepper motor rotary stages can provide resolution in the arcsecond range when driven with a micro-stepping motor controller such as the Mercury compact, low cost single axis stepper motor controller.

RS-40 Small Rotation Stage

Worm Gear, Servo & Stepper

20mm aperture, 34mm turn table
87µrad min. inc. motion
7°/sec max. velocity
2kg load

Details Vacuum Version

DT-80 Small Rotation Stage

Worm Gear, Servo & Stepper

40mm aperture, 64mm turn table
70µrad min. inc. motion
40°/sec max. velocity
2kg load

Direct Drive, Direct Encoder

36mm aperture, 110mm turn table, 14mm height
12-27µrad min. inc. motion
540°/sec max. velocity
2kg load
Ultrasonic motor, self locking

The U-628 ultrasonic-motor-driven small rotation stage provides high velocity to 720°/second. It is equipped with an optical, direct metrology encoder, and due to its self-clamping motor design, boasts very high position stability.

Direct Drive, Direct Encoder

7mm aperture, 50mm turn table, 19mm height
51µrad min. inc. motion
720°/sec max. velocity
0.5kg load
Ultrasonic motor, self locking

With Ø30mm and Ø20mm, respectively the U-624 and U-622 are even more compact versions of the U-628 rotary stage.

Direct Drive, Direct Encoder

28.5mm turn table, 12mm height
105µrad min. inc. motion
720°/sec max. velocity
0.1kg load
Ultrasonic motor, self locking

With Ø30mm and Ø20mm, respectively the U-624 and U-622 are even more compact versions of the U-628 rotary stage.

Direct Drive, Direct Encoder

18.5mm turn table, 10mm height
525µrad min. inc. motion
720°/sec max. velocity
0.03kg load
Ultrasonic motor, self locking

Inertia Motor, Direct Encoder

30mm turn table, 10mm height
3µrad min. inc. motion
45°/sec max. velocity
0.1kg load
Piezo inertia motor, self locking

Details Article Video